Octpentoctium (Opo)

Octpentoctium is the systematic name of the theoretical 858. element in the periodic table with a symbol of Opo and atomic number of 858. Octpentoctium, also known as element 858, has kahdeksan­sataa­viisi­kymmentä­kahdeksan protons in its nucleus, and kahdeksan­sataa­viisi­kymmentä­kahdeksan electrons in its shells.